例句
The axle doesn't work smoothly. It needs oiling.
轮轴发涩, 该上油了。
They know how to code, but they're also familiar with the smell of axle grease.
他们知道如何写代码，但是他们也非常熟悉车轴机油的气味。
By definition, a fifth wheel is a wheel or a portion of a wheel with two parts rotating on each other that sits on the front axle of a carriage and adds extra support so it doesn’t tip.
通过定义，第五个轮子，是成为一个四轮马车的前车轴上互相旋转的两个部分的一个轮子或一个轮子的一部分，而加上一个额外的辅助轮子，这样它就不会倾斜。